J.J. Connolly is the writer of the crime novel, Layer Cake, and of the screenplay of the film based on it.

Connolly has recently finished the sequel to Layer Cake entitled Viva La Madness. Only two characters remain from Layer Cake, the unnamed narrator and his partner in crime, Mister Mortimer, AKA Morty. It begins in the Australia with Morty attempting to recruit the reluctant narrator back to London and the crime business as a super-salesman and closer for a UK syndicate. Some confusion arose when a sequel was announced as the film version of Layer Cake had a different ending to the original novel.